Archery bow



May 27, 1958 BEAR 2,836,166 v ARcHERs; Bow v Filed Aug. 13, 1956 y jizzezzfiar j gredfl. flea)" ARCHERY BOW Fred B. Bear, Grayling, Mich.,assignor to Bear Archery Company, Grayling, Micl1., a corporation ofMichigan Application August 13, 1956, Serial N 603,592

11 Claims. (Cl. 124-23) This invention relates to archery bows of thetype disclosed in my copending application Serial No. 603,591, filed oneven date herewith, in which the loops at the ends of the bow string arereplaced by heads fitting into recesses in the ends of the bow. Objectsof the present invention are to facilitate bracing and unbracing in bowsof this type.

According to the present invention the bow is provided with means toeject one of the heads from its recess in unbracing the bow. While themeans may be manual it is preferably elastic to snap the head out of therecess automatically when the bow is flexed to unbrace. To return thehead to the recess in bracing, the bow is preferably provided withelastic means having one end attached to the head and extending from thehead toward the adjacent end of the bow to maintain the string taut whenthe bow is unbraced. In the preferred embodiment the ejecting meanscomprises a part settable to two positions in one of which the head ismovable into the recess when the bow is braced and in the other of whichthe head is ejected from the recess in unbracing the bow. While theejecting means may comprise any kind of an elastic part, such as anelastic cord, spiral tension spring,

or rubber band, it preferably comprises a leaf spring movable betweentwo positions in one of which it is retained in retracted position topermit the head to enter the recess when the bow is braced and in theother of which it snaps the head out of the recess in unbracing the bow.

For the purpose of illustration typical embodiments of the invention areshown in the accompanying drawings in which-- Fig. l is a side elevationof a bow;

Fig. 2 is a central section of one end of the bow when braced and withthe ejector latched in retracted positron;

Fig. 3 is a similar view with the ejector unlatched;

' Fig. 4 is a similar view showing the head being ejected in unbracingthe bow;

Fig. 5 is a similar view showing the bow in unbraced condition; V

Fig. 6 is a similar view showing the ejector latched again prepartory tobracing the bow;

Fig. 7 is a view from the line 7-7 of Fig. 2;

Fig. 8 is a section on line 88 of Fig. 7;

Fig. 9 is a rear view of the ejector;

Fig. 10 is a rear view of the lower end of the bow;

Fig. 11 is a rear view of one end of a modified bow; and

Fig. 12 is a section on line 12l2 of Fig. 11.

While the present invention is applicable to bows of many types it isillustrated as applied to a bow of the type shown in Fig. 1 in which thebow is indicated at 1 and the string at 2. As shown in the other figuresthe rear face of the bow (commonly called the face) is provided with arecess 3 extending transversely from side to side. Extending from thecenter of this recess toward the opposite end of the bow is a groove 4to accommo- United States Patent 0 "ice date the string when the bow isbraced. Seated in the recess 3 is an elongate cylindrical head 6 to thecenter of which the string 2 is attached. Extending from the recess 3 tothe rear face of the bow is a mouth 7 through which the head 6 may beremoved from the recess when tension on the string 2 is relieved inunbracing the bow. As shown in Figs. 2 to 6 the recess slopes upwardlytoward the rear face of the how so that there is no tendency of the head6 to slip out of the recess when the bow is braced.

The end of the bow is provided with a groove 8. An elastic cord 11extends through the groove with one end fastened to the center of thehead 6 and the other end fastened to the front of the bow (commonlycalled the back) at 12. V A tubular guard 13 may be disposed over thelower end of the cord.

As shown at 14 the bottom of the groove 4 is widened so that the grooveis T-shaped in cross-section. Slidable lengthwise of the groove 4 is aleaf spring 16 (Fig. 9). The lower end of the spring is provided with aslot 17 to receive a screw 18 so that the spring may slide from thelower position shown in Figs. 2, 6 and 7 to the upper position shown inFigs. 3, 4 and 5. The lateral portions 14 of the groove 4 increase inthickness toward the recess 7 so that the spring 16 may flex from theposition shown in Figs. 2, 3 and 6 to the position shown in Figs. 4 and5. The upper end of the spring has a forwardly curving end 19 which iswidened to provide shoulders 21 and which is bifurcated to provide aslot 22. t the upper forward corners of the lateral portions 14 of theslot 4 the bow is provided with recesses 23 to receive the shoulders 21when the spring is moved to lower position, thereby to hold the springin the retracted position shown in Figs. 2, 3 and 6. When the spring ismoved to its upper position it is free to spring rearwardly to theposition shown in Figs. 4 and 5.

To unbrace the how the spring is moved to the upperposition shown inFig. 3 where it is free to spring forwardly when the head 6 is liftedout of the recess 3. Then when the bow is flexed in the usual way thespring snaps from the position shown in Fig. 3 to the position shown inFig. 4, thereby ejecting the head 6 from the recess 3. When the bow ispermitted to straighten again the head slides down the rear face of thebow to the posi tion shown in Fig. 5. This increases the tension in theelastic cord 11 to hold the string taut while the bow is unbraced. Tobrace the how the upper end of the spring 16 is pushed forwardly and thespring is moved downwardly until the shoulders 21 seat in the recesses23, at which time the parts are in the positions shown in Fig. 6. Thenwhen the bow is flexed in bracing the elastic cord 11 pulls the head 6from the position shown in Fig. 6 back to the position shown in Fig. 2,the head snapping back into the recess because the spring 16 is latchedin retracted position.

Instead of using a cylindrical head 6 as shown in Figs. 2 to 8, the headmay have any other desired shape. For

example a ball-shaped head 26 is illustrated in Fig. 10

to anchor the string in the lower end of the bow. At this end of the bowthe slot 27 extending from the head recess 28 to the rear face of thebow in preferably narrower than the head 26 so that the head can beremoved from the recess only by lateral movement along the recess to oneside of the bow after the string 2 has been the aforesaid illustrationin the addition of a pulley 31 in the groove 8 to reduce the friction onthe elastic part 11 and the omission of the slot 17 and screw 15, the"Patented May 27, 1958 tion.. a

It should be understood that the present disclosure is the string, thegroove being narrower than the head so that. the head cannot pull outthrough the-groove when the bow is braced, the mouth of the recess beinglarger than the head, and means toeject the head from the recess whentension in the string is relieved 2. An archery bow characterized inthat the string has a head on one end which is wider than the string,one end of the bow has a recess in its face to receive the head and agroove leading from the recess toward the other end of the bow along theface of the bow to receive the string, the groove being narrower thanthe head so that the head cannot pull out through thergroove when p thebowis braced, the mouth of the recessbeing larger than the head, andelastic means to snap the head out of the recess when tension in thestring is reiieved.

3. An archery bow'characterized in that the string has a head on one endwhich is wider than the string, one end of'the bow has a recess in itsfacerto receive the head and a groove leading from the recess toward theother end of the bow along the face of the bow to receive the string,the groove being narrower than the head so thatthe head cannot pull outthrough the groove when the bow is braced, the mouth of the'recess beinglarger than the head,'elastic means attached to the-bow and head andextending from the head toward the adjacent end'of the bow in alignmentwith said groove to maintain the string taut. when the bow is unbraced,and

means to eject the head from the recess when tension in the string isrelieved. I 1 V 4. An archery bow'characterized in that the'string has ahead on'one end which is wider than the string, one end of the bow'has arecess in its face to receive-the head and a groove leading from therecess toward the other end of the bow along the face of the bow toreceive the string, the groove being narrower than the head so that thehead cannot pull out through the'groove when the bow'is'braced, themouth of the recess being larger than thehead, elastic meansattached tothe bow and head and extending from the head toward the adjacent end ofthe bow in alignment with said groove to maintain the string, taut whenthe bow is unbrac'ed, and elastic means to snap the head out of therecess when tension inthe string is relieved.

spring being slida'blyheld in the groove merely by frica a head on oneend which is wider than the string, one

head so'that thehead cannot pull out'through the groove when thebowisbraced, the mouth of the recess-being larger than the head, elasticmeans attached to the bow and head and extending from the head towardthe adjacent end of the bow in alignment with said groove to maintainthe string taut when the bow'is unbraced, and means for controlling themovement of the head into and out of therecess, said means having a partsettable to two positions in one of which the head is movable into therecess when the bow is braced and in the other which the hcad'is ejectedfrom the recess when tension in'the string is relieved.

7 An archery bow characterized in that the. string has end of the bowhas'a recess in its face to receive the head and a groove leading fromthe recess toward the other end of the how along the face of the bow toreceive the string, the groove being narrower than the head so 5. Anarchery how characterized in that the string has ahead on one end whichis wider than the string, one

end of the how has a recess in its face to receive the head and a grooveleading from the recess toward the other end of thebow along the face ofthe bow to receive the string, the groove being narrower than the headso that the head cannot pull out through the groove when the bow isbraced, the mouth of the recess beinglarger than the head, and means forcontrolling the movement ofthe'head into andout of the recess, saidmeans having a partsettable to two positions in one of which'the head ismovable into the recess when the bow is braced and in the other of whichthe head is ejected from the recess when tension in the string isrelieved.

'6. An archery bow characterized in that the string has a head on oneend which is wider than the string, one end: of the .bow hasa recess inits face to receive the head and a grooveleading from the recesstoward'the other end of the bow along the face of the bow to thatthe-head cannot pull out through the groove when the bow is braced, themouth of the recess being larger than the head,- elastic means havingone end attached to the head and extending from the head toward the headis movable into the recess when the bow is braced] and in theothe'r ofwhich the head is'ejected from the recesswhen tension in the stringisrelieved. V

8; An archery bowcharacterized in that the stringhas a head' on one endwhich is wider than the string, oneend ofthe how has a recess in itsface to receive the head I and a groove-leading from the'recess'towardthe other end of the bow along the face of the bow to rec'eivethestring, the groove being narrower than the head soithatthe head cannotpull out through the groove when the bow is braced, the mouth of therecess being larger thanthe head, and aileaf spring to' snap the 'headout of V the recess when tension in the string is" relieved.

9; An areherybow characterized in that the string has a head on one endwhich is wider than the string, one

end of the how has a recess in its face to receive the head and a grooveleading from the recess towardtheother end of the'bow a-longthe face ofthe-bow'to receive the string, the groove being narrower that-t the Vhead-so that the head cannot pull out through the groove whentliebowisbraced, the mouth of-the rec'ess being larger than the head, elasticmeans attached to the bawand head and extending from the head toward theadjacent end of the bow in alignment with said groove to maintain thestring taut when the bow is unbrac'ed, and a leaf spring to snap thehead 'out of the recess when in the string is relieved. v

10. An archerybow characterized in that the stringhas a head on one endwhich is widerzthanthestring, oneend of the bow hasa reeess'inits faceto receive'thehead andagroove leading from the recess toward the'other'end of the bow along theface of the'bow to receive the string, thegroove being narrower than the head so'that the head cannot pulloutthrough the groove when the bow is braced, the mouth of therecess beinglarger than the V head, and means for controlling the movement of theread into and'out of'the reccss, said means including a leaf springsettable' in two positions in one of which it is retained in retractedposition to permit the head to" enter the recess when the bow is bracedand in the other of'which it'snaps the head outof the recess whentension in the string is relieved.

' 11. An archery bow characterized in that the string has a head on oneend which is wider than the string, one

end of the how has a'recess in its face to receive the.

head and a groove leading from the recess toward the other end of thebow along'the face of the bow to receive tension 5 the string, thegroove being narrower than the head so References Cited in the file ofthis patent tlhlat the head cannot pull out through the groove whenUNITED STATES PATENTS e bow is braced, the mouth of the recess beinglarger than the head, elastic means attached to the bow and 484399Lyflqh 251 1892 head and extending from the head toward the adjacent 5561,855 Bapnst June 91 1896 end of the bow in alignment with said grooveto maintain 1,391,457 Buckley at Sept- 1921 the string taut when the bowis unbraced, and means for 2,307,021 cofdfrey at 5, 1943 controlling themovement of the head into and out of the 2,370,783 Dntz 61 1945 recess,said means including a leaf spring settable in two 2,591,925 Erbe 811952 positions in one of which it is retained in retacted posi- 102589559 Meyer SePt- 211 1954 tion to permit the head to enter the recesswhen the bow is braced and in the other of which it snaps the head outof the recess when tension in the string is relieved.

